Tachyon inflation in the holographic braneworld. (arXiv:1809.07216v4 [gr-qc] UPDATED)

Tachyon inflation in the holographic braneworld. (arXiv:1809.07216v4 [gr-qc] UPDATED)
<a href="http://arxiv.org/find/gr-qc/1/au:+Bilic_N/0/1/0/all/0/1">Neven Bilic</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Dimitrijevic_D/0/1/0/all/0/1">Dragoljub D. Dimitrijevic</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Djordjevic_G/0/1/0/all/0/1">Goran S. Djordjevic</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Milosevic_M/0/1/0/all/0/1">Milan Milosevic</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Stojanovic_M/0/1/0/all/0/1">Marko Stojanovic</a>

A model of tachyon inflation is proposed in the framework of holographic
cosmology. The model is based on a holographic braneworld scenario with a
D3-brane located at the holographic boundary of an asymptotic ADS$_5$ bulk. The
tachyon field that drives inflation is represented by a DBI action on the
brane. We solve the evolution equations analytically in the slow-roll regime
and solve the exact equations numerically. We calculate the inflation
parameters and compare the results with Planck 2018 data.

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